HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 402

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

9.2.9
TROCR is a 16-bit counter that indicates the number of frames that were unable to be transmitted
in 16 retransmission attempts. When 16 transmission attempts have failed, TROCR is incremented
by 1. When the value in this register reaches H'FFFF (65,535), the count is halted. The counter
value is cleared to 0 by a write to this register (the write value is immaterial).
Bits 31 to 16—Reserved: These bits are always read as 0. The write value should always be 0.
Bits 15 to 0—Tx Retry Over Count 15 to 0 (TROC15 to TROC0): These bits indicate the number
of frames that were unable to be transmitted in 16 retransmission attempts.
386
Initial value:
Initial value:
Initial value:
Tx Retry Over Counter Register (TROCR)
R/W:
R/W:
R/W:
Bit:
Bit:
Bit:
TROC15 TROC14 TROC13 TROC12 TROC11 TROC10 TROC9
TROC7
R/W
R/W
31
—
15
0
R
0
7
0
TROC6
R/W
R/W
30
—
14
0
R
0
6
0
TROC5
R/W
R/W
29
—
13
0
R
0
5
0
TROC4
R/W
R/W
. . .
. . .
. . .
. . .
12
0
4
0
TROC3
R/W
R/W
19
—
11
0
R
0
3
0
TROC2
R/W
R/W
18
—
10
0
R
0
2
0
TROC1
R/W
R/W
17
—
0
R
9
0
1
0
TROC8
TROC0
R/W
R/W
16
—
0
R
8
0
0
0